Answer:
Number 3 is “dark”
Explanation:
After the Industrail Revolution, there was a large growth in dark peppered moth population.
C is correct
A is incorrect because the far right lane of the road is NEVER a U-turn lane unless you can drive on the sidewalk legally (you can't)
B is incorrect it is not always the lane next to the center lane
Answer:
Placebo, Is used to describe a substance given in clinical trial that does not contain the drug.
Explanation:
- Clinical trials are done to evaluate the effectiveness of a drug in treating a particular medical symptom or disease.
- In such case a placebo is used as a control in the experiment.
- A placebo contains all the components as the medicine except for the drug that is being tested.
- A placebo is given to one group of patients having the symptoms for which the drug is tested while another group of patients with same symptoms are given the drug.
- If the group that was given the drug show symptoms of cure while the group that was given placebo does not show changes. Then the drug is said to be effective.
